Sealing ring membrane



FIG. 1 is a top perspective view of a sealing ring membrane embodying my new design;

FIG. 2 is a bottom perspective view of the sealing ring membrane embodying my new design;

FIG. 3 is a plan view of the sealing ring membrane embodying my new design;

FIG. 4 is a side elevational view of the sealing ring membrane embodying my new design; and,

FIG. 5 is a cross sectional view of the sealing ring membrane taken alone line 5—5 of FIG. 1. 

I claim the ornamental design for a sealing ring membrane, as shown and described. 